Epoxy resins are widely used as adhesives, coatings, paints, composites and in dental therapy, thanks to their impressive adhesion and mechanical properties and chemical resistance. When the resins incorporate mesogenic groups along the main chain and are capable of crosslinking between chains, liquid crystalline domains can be formed. Such resins can also be reinforced with the addition of fillers like carbon nanotubes to improve modulus, strength and toughness, and provide good thermal stability, and thermal and electrical conductivity. On page 301 of this issue, Wei Fang Su and colleagues investigate the effects of the added carbon nanotubes on the curing process of epoxy composites. They find that the nanotubes help to decrease the curing reaction barrier, but that because they also restrict polymer chain movement, the overall degree of cure is lower in the composites than the pure resin.